<template>
	<div>
		<img v-bind:src="options.img" @click="editCropper()" title="点击上传头像" class="img-circle img-lg"/>
		<el-dialog :title="title" :visible.sync="open" width="800px" append-to-body @opened="modalOpened">
			<el-row>
				<el-col :xs="24" :md="12" :style="{height: '350px'}">
					<vue-cropper
						ref="cropper"
						:img="options.img"
						:info="true"
						:autoCrop="options.autoCrop"
						:autoCropWidth="options.autoCropWidth"
						:autoCropHeight="options.autoCropHeight"
						:fixedBox="options.fixedBox"
						@realTime="realTime"
						v-if="visible"
					/>
				</el-col>
				<el-col :xs="24" :md="12" :style="{height: '350px'}">
					<div class="avatar-upload-preview">
						<img :src="previews.url" :style="previews.img"/>
					</div>
				</el-col>
			</el-row>
			<br/>
			<el-row>
				<el-col :lg="2" :md="2">
					<el-upload action="#" :http-request="requestUpload" :show-file-list="false"
							   :before-upload="beforeUpload">
						<el-button size="small">
							上传
							<i class="el-icon-upload el-icon--right"></i>
						</el-button>
					</el-upload>
				</el-col>
				<el-col :lg="{span: 1, offset: 2}" :md="2">
					<el-button icon="el-icon-plus" size="small" @click="changeScale(1)"></el-button>
				</el-col>
				<el-col :lg="{span: 1, offset: 1}" :md="2">
					<el-button icon="el-icon-minus" size="small" @click="changeScale(-1)"></el-button>
				</el-col>
				<el-col :lg="{span: 1, offset: 1}" :md="2">
					<el-button icon="el-icon-refresh-left" size="small" @click="rotateLeft()"></el-button>
				</el-col>
				<el-col :lg="{span: 1, offset: 1}" :md="2">
					<el-button icon="el-icon-refresh-right" size="small" @click="rotateRight()"></el-button>
				</el-col>
				<el-col :lg="{span: 2, offset: 6}" :md="2">
					<el-button type="primary" size="small" @click="uploadImg()">提 交</el-button>
				</el-col>
			</el-row>
		</el-dialog>
	</div>
</template>

<script>
import store from "@/store";
import {VueCropper} from "vue-cropper";
import {uploadAvatar} from "@/api/system/user";

export default {
	components: {VueCropper},
	props: {
		user: {
			type: Object
		}
	},
	data() {
		return {
			// 是否显示弹出层
			open: false,
			// 是否显示cropper
			visible: false,
			// 弹出层标题
			title: "修改头像",
			options: {
				img: store.getters.avatar, //裁剪图片的地址
				autoCrop: true, // 是否默认生成截图框
				autoCropWidth: 200, // 默认生成截图框宽度
				autoCropHeight: 200, // 默认生成截图框高度
				fixedBox: true // 固定截图框大小 不允许改变
			},
			previews: {}
		};
	},
	methods: {
		// 编辑头像
		editCropper() {
			this.open = true;
		},
		// 打开弹出层结束时的回调
		modalOpened() {
			this.visible = true;
		},
		// 覆盖默认的上传行为
		requestUpload() {
		},
		// 向左旋转
		rotateLeft() {
			this.$refs.cropper.rotateLeft();
		},
		// 向右旋转
		rotateRight() {
			this.$refs.cropper.rotateRight();
		},
		// 图片缩放
		changeScale(num) {
			num = num || 1;
			this.$refs.cropper.changeScale(num);
		},
		// 上传预处理
		beforeUpload(file) {
			if (file.type.indexOf("image/") == -1) {
				this.msgError("文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。");
			} else {
				const reader = new FileReader();
				reader.readAsDataURL(file);
				reader.onload = () => {
					this.options.img = reader.result;
				};
			}
		},
		// 上传图片
		uploadImg() {
			this.$refs.cropper.getCropBlob(data => {
				let formData = new FormData();
				formData.append("avatarfile", data);
				uploadAvatar(formData).then(response => {
					if (response.code === 200) {
						this.open = false;
						this.options.img = response.imgUrl;
						store.commit('SET_AVATAR', this.options.img);
						this.msgSuccess("修改成功");
					}
					this.visible = false;
				});
			});
		},
		// 实时预览
		realTime(data) {
			this.previews = data;
		},
	}
};
</script>
